Many of the celebrities who attended the event tweeted from the event along with these pics.

“Maybe the only man I truly get nervous around,” Glee’s 26-year-old Agron. tweeted.

“Worth the early wake up call. Truly inspirational talking with Barack Obama today,” Greenberg, 34, agreed in his tweet.

Actress Alba, 31, shared a group shot of 25 stars and tweeted, “Got up bright and early to hear Barack Obama speak with an awesome group.”

Somerhalder added, “Totally surreal morning. Met up with some friends, had coffee with President Obama now tweeting. The 21st century… Let’s do this… Just spent my morning with this man talkn (talking) green energy, a better America & being a young American. Wow.”